Any way to weight paint a specific value?
If you're using 2.79:

You can set the maximum value of the brush from the "Weight" option under the brush, from my experience the assigned weight will not exceed this value.

If you select a part of your mesh you can assign a weight ranging from 0-1.0 from the Object Data Properties tab. You can also see &amp; modify the values assigned from the N menu's "Vertex Weights" tab when a vertex is selected.